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ADM8319 데이터시트 PDF




Analog Devices에서 제조한 전자 부품 ADM8319은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 ADM8319 기능
기능 (ADM8316 - ADM8322) Supervisory Circuits
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ADM8319 데이터시트, 핀배열, 회로
Data Sheet
Supervisory Circuits with Watchdog
and Manual Reset in 5-Lead SOT-23
ADM8316/ADM8318/ADM8319/ADM8320/ADM8321/ADM8322
FEATURES
26 reset threshold options
2.5 V to 5 V in 100 mV increments
4 reset timeout options
1 ms, 20 ms, 140 ms, and 1120 ms (minimum)
4 watchdog timeout options
6.3 ms, 102 ms, 1.6 sec, and 25.6 sec (typical)
Manual reset input
Multiple reset output options
Low power consumption
Specified over wide temperature range (−40°C to +125°C)
Qualified for automotive applications
5-lead SOT-23 package
APPLICATIONS
Automotive infotainment
Microprocessor systems
Computers
Controllers
Intelligent instruments
Portable equipment
FUNCTIONAL BLOCK DIAGRAMS
ADM8316
VCC
VREF
RESET
GENERATOR
VCC
RESET
MR DEBOUNCE
WATCHDOG
DETECTOR
GND
WDI
Figure 1. ADM8316
ADM8320
VCC
VREF
MR DEBOUNCE
RESET
GENERATOR
WATCHDOG
DETECTOR
RESET
GND
WDI
Figure 2. ADM8320
GENERAL DESCRIPTION
The ADM8316/ADM8318/ADM8319/ADM8320/ADM8321/
ADM8322 are supervisory circuits that monitor power supply
voltage levels and code execution integrity in microprocessor-
based systems. As well as providing power-on reset signals, an
on-chip watchdog timer can reset the microprocessor if it fails
to strobe within a preset timeout period. A reset signal can also
be asserted by an external push-button switch through a manual
reset input. The six devices feature different combinations of
watchdog input, manual reset input, and output stage
configuration, as shown in Table 6.
Each device is available in a choice of 26 reset threshold options
ranging from 2.5 V to 5 V in 100 mV increments. There are also
four reset timeout options of 1 ms, 20 ms, 140 ms, and 1120 ms
(minimum) and four watchdog timeout options of 6.3 ms, 102 ms,
1.6 sec, and 25.6 sec (typical).
The ADM8316/ADM8318/ADM8319/ADM8320/ADM8321/
ADM8322 are available in 5-lead SOT-23 packages and
typically consume only 10 µA, making them suitable for use in
low power, portable applications.
Rev. 0
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
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ADM8319 pdf, 반도체, 판매, 대치품
ADM8316/ADM8318/ADM8319/ADM8320/ADM8321/ADM8322
Data Sheet
Parameter
MANUAL RESET INPUT (ADM8316, ADM8319, ADM8320,
ADM8322)
VIL
VIH
MR Input Pulse Width
MR Glitch Rejection
MR Pull-Up Resistance
MR to Reset Delay
Min
2.0
1
35
Typ Max
0.8
100
75 125
350
Unit Test Conditions/Comments
V
V
µs
ns
ns VCC = 5 V
1 The device switches from undervoltage reset to normal operation when 1.5 V < VCC < 2.5 V.
2 The device monitors VCC through an internal factory trimmed voltage divider that programs the nominal reset threshold. Factory-trimmed reset thresholds are
available in approximately 100 mV increments from 2.5 V to 5 V.
Rev. 0 | Page 4 of 16
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ADM8319 전자부품, 판매, 대치품
Data Sheet
ADM8316/ADM8318/ADM8319/ADM8320/ADM8321/ADM8322
TYPICAL PERFORMANCE CHARACTERISTICS
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
–40
VCC = 5.0V
VCC = 3.0V
VCC = 1.5V
–20 0
20 40 60 80 100
TEMPERATURE (°C)
Figure 6. Supply Current (ICC) vs. Temperature
120
12
10
8
6
4
2
0
0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2 5.6
VCC (V)
Figure 7. Supply Current (ICC) vs. Supply Voltage (VCC)
1.05
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
0.95
–40 –20
0
20 40 60 80 100 120
TEMPERATURE (°C)
Figure 8. Normalized Reset Threshold vs. Temperature
100
90
80
70
60
50
40
30
20
10
0
–40
VTH = 5V
VTH = 2.93V
VTH = 2.5V
–20 0
20 40 60 80 100
TEMPERATURE (°C)
Figure 9. VCC to Reset Delay vs. Temperature
120
500
450
400
VTH = 2.5V
350
300 VTH = 2.93V
250 VTH = 5V
200
150
100
50
0
–40 –20
0
20 40 60 80 100 120
TEMPERATURE (°C)
Figure 10. Manual Reset to Reset Propagation Delay vs. Temperature
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
–40 –20
0
20 40 60 80 100 120
TEMPERATURE (°C)
Figure 11. Normalized Reset Timeout vs. Temperature
Rev. 0 | Page 7 of 16
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